Loose-leaf book, such as ledger, order-book, and the like.



A. T. WARNE.

LOOSE LEAF BOOK, SUCH AS LEDGER, ORDER BOOK, AND THE LIKE.

APPLIOATIOH FILED SEPT. 29, 1905. v

91 5,812. Patented Mar. 23, 1909.

- 1221625252 jfiihc/sas. J .77 W

UNITED STATES PATENT ormca.

ALBERT THOMAS WABNE, OF LEYTONSTONE, ENGLAND, ASSIGNOR TO SPICER BROTHERS,

OF LONDON, ENGLAND, A CORPORATION OF ENGLAND.

Specification of Letters Patent.

' Patented March 23, 1909.

Application filed September 28,1905. Serial no. 280,475.

To all whom it "may concern.

Be it. known that I, ALBERT THOMAS WARNE, engineer, a subject of the. King of England, residing at Qowley road, Leytonstone, in the county ref Essex, England, have invented certain new and usefullmprovements in Loose-Leaf Books, such as edgers, Order-Books, andthe Like, of

which the following is a specification.v

This invention-has for its object improve ments in loose leaf 'books,-'such as l'edgers,

brder books and the like which have a back consisting of three parts, one center and two outer ones, the two outer parts being pushed a art by telescopic posts inclosing springs, t e central remaining stationary.

'The said invention is illustrated in the accompanying drawing. s

The outer tray like parts that form the back of the book or volume are indicated atbooksof this character.

The principal feature of this invention is the application-t0 a loose-leaf book the back. of which consists of three parts of mechanism that will preventthe obnoxious jerk caused by the unchecked action of the springs in Y the telescopic posts and make the expansion of the volume quiet and steady. I

The means consist essentially in a toothed wheel and pawl on "the central part acting in conjunction with racks on the outerparts and means for stopping the motion. A rack A is fixed on the top tray and another rack B on the bottom tray. These racks engage" with a gear wheel on the central part 1.

Each rack slides with its 'untoothed part upon a bar D, D, which holds it in jjosition so that the racks work steadily 'etween bars D, D, on the one hand and the wheel O on the other.

To the wheel 0 or to its spindle is attached a ratchet wheel It is preferred to rivet the wheels together but any means causing them to rotate together will serve the purpose. A pawl F fulcrumed at G engages with the ratchet wheel E, a spring H serving to maintain the engagement.

Iisarodhaving ahead, stud or button at I. -It serves to lift pawlF out of engagement with the ratchet wheel E. The rod I has a slotted extension J which works on a stud K carried by the 'awlF.' Whentherodlisliftedbyraising stu I the lower closed end of slot J pulls on the stud Kcausing release of the ratchet wheel E. his permits the-telescopic posts to become 0 erative .and to expand the volume or boo The engagement of the racks A and B'with WheelC, rotates the, latter and this checks the motion, taking up the jerk that heretofore has been so unpleasantly noticeable in devices of. this class. The racks A and B bearing against bars .D, D, work very smoothly and balance one another. As soon as the rod I is released'the spring H carries awl F back .into engagement with the rate et wheel E and the motion is stopped.

Claims. 1. In a loose leaf book having aback consisting of three parts and expanded by spring posts, a slotted rod extending to the o'xterior of the volume, a spring pawl actuated by such rod, and rack and pinion gear fixed on the central part and operated by the spring pawl.

2. In a loose leaf book having a fixed cen tral portion and moving outer parts with telescopic spring posts between the same, a pinion on the central part and a rack on each outerpart so, placed-as to engage with the pinion on either side, a ratchet wheel rigidly connected with the pinion, a sprin p'awl engaging with the ratchet wheel, a s otted bar engaging with a stud on the s ring pawl, and means for raising the slotted ar.

In; testimony whereof I have hereunto set my hand in the presence 'of two witnesses. ALBERT THOMAS WARN E. Witnesses:

BERNHARD DUKES,

JAMES I. LINToN. 

